What is the legal consequence if a man marries an adult woman and a minor girl simultaneously, and then divorces the minor girl, and the adult wife breastfeeds the minor girl with her milk?

Primary text

If the adult wife breastfeeds the minor girl, the adult wife becomes forbidden, and their marriage is nullified (infaskh). If consummation had not occurred with the adult wife, she has no right to the dower (mahr), and the man may marry the minor girl. If consummation had occurred, she is entitled to her full dower, and both the adult wife and the minor girl become permanently forbidden to him.